Give examples to show that friction is both a friend and a foe.

AcademicPhysicsNCERTClass 8

To do:
We have to give examples to show that friction is both a friend and a foe.

Solution:
Friction acts as both friend and foe which can be represented as follows:

Friction as a friend:
The following examples show that friction acts like a friend;
  • With the help of friction, we get able to grip and catch any object.
  • We can walk comfortably on the floor with the help of friction offered by the floor's surface.
  • Friction helps to minimize the speed or to stop any moving object.
  • We get able to write on paper due to friction.

Friction as a foe:

The following examples show that friction acts like a foe:

  • Friction causes wear and tears in objects.
  • Friction is the main cause of damage to the parts of machines and tools which further require money to get repaired.
  • The speed of moving objects gets reduced due to friction, so more force is required.
  • Friction produces hurdles in any freely moving object.
raja
Updated on 10-Oct-2022 13:25:02

Advertisements